Application of uranium mineralization information detection technology at Niaoshan area in Tarim basin
Tarim basin is mostly covered by the largest Taklimakan desert in China,which is rich in oil and natural gas resources,and has huge potential for uranium mineral resources.At present,the exploration level of uranium deposits in the desert covered areas is low,the determination of deep uranium exploration targets urgently requires a large amount of uranium exploration efforts,and the detection of uranium mineralization information is an important part of uranium exploration.Radioactive geophysical and penetrating geochemical methods in desert covered areas can effectively detect and identify anomalies in deep uranium mineralization information and predict deep uranium ore bodies.For this reason,in Niaoshan desert coverage area at the southwest edge of Bachu uplift area in the Tarim basin,active carbon adsorption radon measurement and component geochemical exploration methods were conducted,and weak information extraction technology,combination,comprehensive information extraction technology and directional derivative were used to extract the information anomaly of deep uranium mineralization.The anomaly was found to be controlled by the Niaoshan fault zone and the Niaoshan east fault zone.The average radon concentration in the Niaoshan desert coverage area is 910 Bq·m-3,which is about half of the non desert coverage sector in the same area.The radon concentration shows a circular anomaly in the plane,with an average uranium component value of 90 ng·g-1,which is about one-third of the non desert coverage sector in the same area.The component content in the plane shows a clustered shape and extends southward along the Niaoshan East Fault Zone.It is believed that the combination of activated carbon adsorption radon measurement and partial extraction geochemical prospecting technology is feasible and effective for uranium exploration in desert covered areas.The anomalies characteristics of radon are consistent with those in non desert covered areas,radon and component uranium anomalies,as well as extracted weak information anomalies,combination anomalies,comprehensive anomalies,and linear anomalies,are closely related to deep mineralization.Overall,there may be multiple types of sandstone type uranium mineralization superimposed metallogenic patterns such as interlayer and seepage in the covered sector of the Niaoshan desert.
sandstone type uranium depositdesert covered areapartial extraction geochemical prospectingradon measurement by activated carbon adsorptioninformation extraction
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